1. Product Overview
This manual provides instructions for the installation, operation, and maintenance of your Perfit Liner 6 inch Running Boards. These running boards are designed to provide a secure step for easier vehicle entry and exit, while also offering protection to your vehicle's side panels.
Compatibility:
- 2018-2026 Jeep Wrangler JL 4 Door models
- Jeep Wrangler 4xe models
- Not compatible with Jeep Wrangler JK models.

Figure 1: Vehicle Compatibility. This image illustrates that the running boards are compatible with 2018-2026 Jeep Wrangler JL 4-door models, showing a blue 4-door Jeep Wrangler JL with a green checkmark, and a white 2-door Jeep Wrangler JL with a red 'X' indicating incompatibility.
Key Features:
- Material: High-quality metal construction with anti-slip polyethylene (PE) plastic pads.
- Weight Capacity: Each side supports up to 500 lbs (total 1000 lbs for the pair).
- Durability: Designed to be slip-resistant, weather-resistant, and provide protection against sand and dust.
- Dimensions: Approximately 75 inches (L) x 6 inches (W) x 2 inches (H).

Figure 2: Product Features. This image displays icons representing a 500 lb weight capacity, slip-resistance, weather-resistance, and protection against sand and dust, with a blue Jeep Wrangler driving through a sandy desert landscape in the background.
2. Package Contents
Before beginning installation, please verify that all components are present and undamaged. If any parts are missing or damaged, contact customer support immediately.
- 2 x Running Boards
- Mounting Brackets (Stainless Steel)
- Installation Hardware (Stainless Steel bolts, washers, nuts)
- Installation Instructions (this manual)

Figure 3: Package Contents. This image shows a close-up of the stainless steel hardware (bolts, washers, nuts) and the stainless steel mounting brackets, along with a running board assembly.
3. Setup and Installation
Installation is designed to be a no-drill process and typically takes approximately 90 minutes. No cutting or modifications to your vehicle are required. It is recommended to have a second person assist with the installation.
3.1 Tools Required (Not Included)
- Socket Wrench Set
- Torque Wrench
- Safety Glasses
- Gloves
3.2 Installation Steps
- Identify Mounting Locations: Locate the pre-drilled mounting holes on the vehicle's frame or rocker panel. These are typically covered by plastic plugs that need to be removed.
- Attach Brackets: Secure the stainless steel mounting brackets to the vehicle's frame using the provided hardware. Ensure all bolts are hand-tightened first. Refer to your vehicle's specific manual for exact torque specifications if available, or tighten securely.
- Position Running Boards: Carefully lift and align one running board with the attached brackets.
- Secure Running Boards: Attach the running board to the brackets using the remaining hardware. Ensure the running board is level and properly positioned.
- Final Tightening: Once both running boards are in place and aligned, fully tighten all bolts to ensure a secure installation. Periodically check tightness after initial use.

Figure 4: Product Structure. This image provides an overhead view of the running boards, showing the integrated mounting points for the brackets and a close-up of the waterproof, slip-resistant step pads.
4. Operating Instructions
The running boards are designed to provide a stable and secure step. Always step onto the running board with caution, especially in wet or icy conditions. The anti-slip textured surface is designed to enhance grip.
- Ensure your footing is firm before applying full weight.
- Do not exceed the maximum weight capacity of 500 lbs per side.
- Avoid jumping onto the running boards.

Figure 5: Product Details. This close-up view highlights the aluminum alloy construction, the black plastic end cap, and the slip-resistant textured surface of the running board.
5. Maintenance
Regular maintenance will ensure the longevity and appearance of your running boards.
- Cleaning: Wash with mild automotive soap and water. Avoid abrasive cleaners or harsh chemicals that could damage the finish or plastic pads.
- Inspection: Periodically inspect all mounting hardware for tightness. Re-tighten any loose bolts to prevent rattling or instability.
- Damage Check: Check for any signs of damage, such as cracks in the plastic pads or bends in the metal frame. Replace damaged components as necessary.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Running boards feel loose or rattle. | Loose mounting hardware. | Inspect and re-tighten all bolts and nuts. |
| Difficulty aligning running boards during installation. | Brackets not correctly positioned or tightened. | Loosen bracket bolts, adjust position, then re-tighten. Ensure vehicle is on a level surface. |
| Running board appears warped or bent. | Excessive force or impact; manufacturing defect. | If due to impact, inspect for structural integrity. If suspected manufacturing defect, contact customer support. |
7. Specifications
- Brand: Perfit Liner
- Model Number: JP-SB-W055
- Manufacturer Part Number: PFL-1254-3472
- Material: Polyethylene (PE) and Metal (Aluminum Alloy)
- Exterior Finish: Antiskid
- Color: Black
- Item Dimensions (L x W x H): 75 x 6 x 2 inches
- Item Weight: 39 Pounds
- Weight Limit: 1000 Pounds (500 lbs per side)
- Automotive Fit Type: Vehicle Specific Fit
- Compatible Vehicle Type: 2018-2026 Jeep Wrangler JL 4xe 4Doors

Figure 6: Product Size. This image indicates the running board is 6.5 inches wide.
8. Warranty Information
This Perfit Liner product comes with a 1-Year Manufacturer Warranty. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, accidents, misuse, abuse, or unauthorized modifications.
For warranty claims, please retain your proof of purchase and contact Perfit Liner customer support.
9. Customer Support
If you have any questions, require assistance with installation, or need to report a missing/damaged part, please contact Perfit Liner customer support. Refer to the contact information provided with your purchase or visit the official Perfit Liner website for support details.
Online Resources:
- For additional product information and support, visit the Perfit Liner Store on Amazon.